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Thread: spray arc ?

  1. #1
    Join Date
    Aug 2007
    Posts
    19

    Default spray arc ?

    i went to a job interview the other day and they asked if i did spray arc welding , ive heard of it but never done it before , so they had me take a couple welding tests doing spray arc and it was super easy and kinda fun ,, so what im wonder is can i spray arc with my mm252 ? and how would i need to set it ?

  2. #2
    Join Date
    Mar 2006
    Location
    Chico, Ca.
    Posts
    316

    Default

    your 252 will spray. you need at least 85/15 gas preferably 90/10. depending on the metal thickness you have to crank your volts and wire speed up.
    miller 225 bobcat
    miller aead200le (with miller hf tig trailer mounted)
    mm175, mm211, TA181i
    mm252 w/30a spool gun
    precision tig 225
    hobart stickmate LX ac/dc
    Speedglas 9100X & XX / Miller Digital Elite
    hypertherm 380 & cutmaster 52
    victor journeyman & super range
    ridgid chop saw, kalamazoo band saw
    steel max and evolution carbide saws
    6 4.5" & a 20lb 9" rockwell grinders
    case 580 backhoe (for what i can"t lift)
    if first you don't succeed
    trash the b#####d

  3. #3
    Join Date
    Mar 2007
    Location
    Deltaville, VA
    Posts
    2,239

    Default

    Got to the top of the page and click on the Resources tab.

    Look for Miller's offer for their "Student Pack".

    It's $25 including shipping. Order it. Best $25 you'll ever spend on welding.

    Has an excellent Tig Handbook, a GMAW Handbok, a GMAW-P Handbook, and a bunch of other useful goodies (like welding calculators).
    Syncrowave 250 DX Tigrunner
    Dynasty 200 DX
    Miller XMT 304 w/714D Feeder & Optima Control
    Miller MM 251 w/Q300 & 30A SG
    Hobart HH187
    Dialarc 250 AC/DC
    Hypertherm PM 600 & 1250
    Wilton 7"x12" bandsaw
    PC Dry Cut Saw, Dewalt Chop Saw
    Milwaukee 8" Metal Cut Saw, Milwaukee Portaband.
    Thermco and Smith (2) Gas Mixers
    More grinders than hands

  4. #4
    Join Date
    May 2010
    Location
    Central CA
    Posts
    781

    Default Calculators

    The Calculators that SundownIII refers to have spray arc settings.
    Good Luck,
    Bob
    Millermatic 252 w/30A
    Big Blue Air Pak
    Ellis 3000 Band Saw
    Trailblazer 302 Air Pak w/ Wireless Remote
    8-RC
    Dynasty 200 DX
    XMT 350 MPa w/S-74 MPa Plus
    Millermatic 211
    Passport Plus
    Spectrum 625 X-TREME
    Lincoln SA-200 Blue Tint Red Face '63
    2-Lincoln SA-200 Red Face '68
    SA-200 Black Face '59
    SA-200 Green Lite '84
    SA-200 Green Lite '80
    SA-200 Red Face '69
    SA-200 Red Face '66
    SA-200 Green Lite '81
    '70 Black Face Round Barrel

  5. #5
    Join Date
    Mar 2011
    Posts
    2

    Default

    Theres 3 different modes of transfer with Mig. Short circuit, globular and spray. Basically what's happening with Spray is the wire is melting before it contacts the plate and "sprays" onto the metal and wets in. In a normal short circuit setting, the one your used to, the wire actually contacts the plate, shorts out and melts into the plate. Spray needs a more Argon rich shielding gas to function. This is also done at much higher heat settings with thicker material.

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